fix: --include-needs should only include direct dependencies

Fixes #1003

Previously, --include-needs was incorrectly including transitive
dependencies (dependencies of dependencies). This fix ensures that:

- --include-needs only includes direct needs
- --include-transitive-needs includes both direct and transitive needs

Changes:
- Add separate handling for direct vs transitive needs in state.go
- Add IncludeNeeds field to ChartPrepareOptions
- Add unmarkNeedsDirectOnly() and collectDirectNeedsOnly() functions
- Update ForEachState and related functions to accept both flags
- Fix incorrect usage of c.IncludeNeeds() for IncludeTransitiveNeeds
- Update tests to verify the correct behavior

Signed-off-by: yxxhero <aiopsclub@163.com>

pkg/app/testdata/testapply_2/skip-needs=false_include-needs=true/log

@@ -26,7 +26,7 @@ rendering result of "helmfile.yaml.gotmpl.part.0":
 23: 
 
 merged environment: &{default  map[] map[] map[]}
-2 release(s) matching app=test found in helmfile.yaml.gotmpl
+3 release(s) matching app=test found in helmfile.yaml.gotmpl
 
 Affected releases are:
   external-secrets (incubator/raw) UPDATED